Engine tester



Aug wz 1,594,3@3 .5. .5. ANEERSQN ENGINE TESTER Filed March 25,` lS

'i am We jlili 5l. a WA limb eine This ineen-tion relates to en imiiicved' en-x gine tester, the. seme having peiticiilei ieeienoe te e device of this kind 'wliic i is more perticuleily adapted `foia nee eigen iii'- teinel combustion engines ef 'the type en played upon eiitoinobiles end oliei: inotoi vehicles.

lli/lose speciiicellyu the invention Tees ieiei ene te e teeting device Wliicli nifty be iitii@ lized for accurately deteiiii'ifning the degree oi suction and eonipieeeion of any desired cylinder.' l

Biiefiy, the im'eiitien comprises e cylindei` in which e spring preesed nieinbei is reciproczibie7 this member being moved in mie direction by the engine conipieseion,` end in tlie opposite direction nuclei tlie inn nence oit` the engine suction. The nienfibei coopei'atee with. e poiiite which ie pivotell'y mounted and in tiiin adapted to coopeiate with zin appropriate calibrated diei for indicating the degree of suction oi' coinpiessioii.

@ne ii minne of the invention ie the novel ssocietion of the cylindeiwith zi. casing provided with the calibrated dial, this; cas ing constituting 'zi mounting for e 'pivoted indicator.

Another feature of the invention is the centi-ally located member which is confined in said cylinder and held in :i normal position by springs, the tension of which must lie overcome by the `compression end suction.

A further feature is tlie inclusion in the spi-nig pressed inemoei of e magnet which serves to operate the indicetoi1 by inegiietism. y

Other features and advantages ci theinveuf-ion will become apparent iiroin the tollowing description and'd'cfiwing'.

ln the accom ian 'infr drai'vinvf forming e" pai-t oit this implication middle which like ,numeiels are employed to desigiiete like parte throughout 'the saine:

i ie .ibinc is e secnona in eci/e iena View oil :i tester constructed iii'eccordiiiice with the pieeent invention.

Referring to the drawinge in detail, it will be seen that the reference character l designates en eppioprietely slieped casing providedwitli a curved top lievi-.ng e. ieinom able dial 2 oeiouete formation. 'liis diet is provided on the iei't hand eide with grad-v iidations oi: cedibietiensll 3 indicating, by

degrees, the engine suction. @n the iiglit i hand neit it ie provided with similaigied nations i foi" indice ing t-lie engine compreseieii. An. inflioetin finger 5 pivoted loe- `tween its ends es et 6 upon the cesiiig nee ite index 'end cooperable with these giediie tiene. The pointer ci' indicntoiis capable f et Swinging in either direction. The loWei end yportion .tlieieo is shaped te peitielljy surround :i horizontal. cyiiiidei 8 the feet tom el@ theceeing., .et-ine lett bend end this cylinder ie pi'oifid'ed `with e. port and the oppesite end theiieoi is opened ioif ccption ofte, eci'eiy plug tl. vittiiciied to this plug isI e exible liose 10 and swivelly con nected to die 'free end of the hose ie en other ping li. adapted to be tapped into 'e speelt plug hole in theengine to lee tested. Associated with tlie open o the cyliiiI dei* is e verticel thermometer .l2 einnloyed to indicate the teniiiieietiire ei? the engine dniing tlic test.

` it will be. noted tlie :ieiieseid ieci}7 .in vocable nieinbei is lecelted the eentei oit the cyiindei 'the seme ceiiig mede up of a pair of' leetiiei' pecking discs 13 between which zi peiinenent dice-shaped magnet i4 is located. Coiled springe-15 ere located in the cylindersl and beei et their inneiends against the discs 13 end at their olitec ends geniet the plug 9 und end of the cylinder S iespectiifely, i y

lil joiectice, the -piling l1 is tapped into the selected spark." ping liole in the engine aiteis removing the sperli plug end assuming that it desired to ascertain the de iee of compression iii tiiet peiticnlai oyliii er', the .engine 'simi' is tiiinedrto loting tlic piston in theft cylindei to tlie ccmpiessioii stage,

lavioiisiy, under the pressure produced iii tlie cylinderg tlie member in the latter will lie moved iii :i dii'ection llioin iight to lei't against the tension of the sigiinge. Under the influence ol the'niagnetism, the niegnet ized indicator will be rocked zilooiii its pivot to moi/e, its index evei 'the gieduetione e io indicate the decree of compression. The

suction in this particular cylindei' may loe ascertained by moving the pieton to tlie encH tion toiniing position, tliiis moving the pointeil in tiie opposite direction te coopei'- v ete Witli die 'gieduetiens The temperau ture is' geged by the thermometer 12.

iTi'oni die 'foregoing description sind draw ing it willl be veeen that l have evolved and i produced e novel testing device Winch will suice to enable one to accurately ascertain the state of compression end suction in any Selected cyiinder of en internal combustion is to be understood that minor changes com-4 ing within fthe field of invention claimed' may be resorted to if desired.

eving thus described the invention, what I claim is:-

l. ln en engine testing device of the class described, fi-cyiinder ope-n et one end, a snug fitting member slidiibly mounted in said cylinder, it ping tapped into the open end of seid cylinder, e iexible conduit connected to sein plug, a coupling carried by the free end or" said conduit, springs inter posed between seid ping, member, end cylinder meinteining the member nornialy in e centrally ice-ated position, 'seid member embodying a permanent magnet, a pivotelly mounted indicator having e magnetized portion cooperable with said magnet, and a graduated dial with which the indicating end of the indicator is cooper-able.

2. As a new article of manufacture, u portable accessory for testing internal combustion engine cylinder compression, and suction, valve defects and the like, comprising a'casing provided at its bottom with a cylinder and at its top with e dial graduated 'ror suction and compression indications, en indicator pivotnlly mounted in the casing and having its pointed end cooperable with the graduetions, a member slidable in seid cylinder and associated with the adjacent end of the indicator for operating tlie .lett-er, springs arranged in seid cylinder and beerm ing` itI their inner ends against seid member, a iiexible conduit connected with one end of the cylinder, and a coupling carried by the free end of the conduit, this 'coupling being adapted to be tapped into a spark plug opening in an engine cylinder.

ln testimony whereof I affix my signature.'

JUBAL ,Monson Aiinnneon. 

